/**
 * Hyper-Focus Theme Stylesheet (Option B)
 * Aesthetic: Modern SaaS, High Efficiency, Glassmorphism
 * Version: 3.0.0
 */

:root {
    /* === Core Palette (Aurora Green & Tech Blue) === */
    --primary-color: #00C1A3;       /* Vibrant Teal/Green */
    --primary-hover: #00A88D;
    --secondary-color: #2D3748;     /* Slate */
    --accent-color: #3182CE;        /* Tech Blue */

    /* === Semantic Colors === */
    --theme-primary: var(--primary-color);
    --theme-primary-hover: var(--primary-hover);
    --theme-warning: #ED8936;
    --theme-danger: #E53E3E;
    --theme-success: #38A169;

    /* === Backgrounds & Glassmorphism === */
    --bg-body: #F7FAFC;             /* Clean tech gray */
    --bg-surface: #FFFFFF;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.6);
    --glass-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);

    /* === Typography === */
    --text-main: #1A202C;
    --text-muted: #718096;
    --text-light: #A0AEC0;
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

    /* === Borders & Radius === */
    --border-light: #E2E8F0;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

/* ==================== 1. Reset & Base ==================== */

body {
    background-color: var(--bg-body);
    font-family: var(--font-sans);
    color: var(--text-main);
    line-height: 1.6;
    padding-top: 64px; /* Navbar height */
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--theme-primary);
    transition: color 0.2s ease;
}

a:hover {
    color: var(--theme-primary-hover);
    text-decoration: none;
}

/* ==================== 2. Glassmorphism Components ==================== */

/* 2.1 Glass Navbar */
.navbar-glass {
    background-color: var(--glass-bg) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: var(--glass-shadow) !important;
}

/* 2.2 Modern Cards */
.card {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg) !important;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.02), 0 1px 2px 0 rgba(0, 0, 0, 0.01);
    background: var(--bg-surface);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
}

.thread-card {
    position: relative;
    border: 1px solid transparent; /* Prepare for hover border */
}

.thread-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    background-color: var(--bg-surface);
    border-color: rgba(0, 193, 163, 0.3); /* Primary color hint */
}

/* 2.3 Glass Inputs */
.form-control {
    background-color: #F8FAFC;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 0.6rem 1rem;
    transition: all 0.2s;
    font-size: 0.95rem;
}

.form-control:focus {
    background-color: #FFFFFF;
    border-color: var(--theme-primary);
    box-shadow: 0 0 0 3px rgba(0, 193, 163, 0.15);
}

/* ==================== 3. Typography & Badges ==================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.025em; /* Tight tracking for modern look */
    color: var(--text-main);
}

.text-muted {
    color: var(--text-muted) !important;
}

/* Tech Badges */
.badge {
    padding: 0.35em 0.65em;
    font-weight: 600;
    border-radius: var(--radius-sm);
    letter-spacing: 0.025em;
}

.badge-success {
    background-color: rgba(0, 193, 163, 0.1) !important;
    color: var(--theme-primary) !important;
    border: 1px solid rgba(0, 193, 163, 0.2);
}

.badge-secondary {
    background-color: #EDF2F7 !important;
    color: #4A5568 !important;
    border: 1px solid #E2E8F0;
}

/* Data Monospace */
.font-mono {
    font-family: var(--font-mono);
}

/* ==================== 4. Buttons ==================== */

.btn {
    font-weight: 600;
    border-radius: var(--radius-md);
    padding: 0.5rem 1.25rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.01em;
}

.btn-primary, .btn-success {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover)) !important;
    border: none !important;
    box-shadow: 0 4px 6px -1px rgba(0, 193, 163, 0.3);
    color: white !important;
}

.btn-primary:hover, .btn-success:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 8px -1px rgba(0, 193, 163, 0.4);
    filter: brightness(1.05);
}

.btn-outline-primary, .btn-outline-success {
    color: var(--theme-primary) !important;
    border: 1.5px solid var(--theme-primary) !important;
    background: transparent;
}

.btn-outline-primary:hover, .btn-outline-success:hover {
    background-color: var(--theme-primary) !important;
    color: white !important;
    box-shadow: 0 4px 6px -1px rgba(0, 193, 163, 0.3);
}

/* ==================== 5. Navigation Tweaks ==================== */

.navbar-brand img {
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.05));
}

.nav-link {
    font-weight: 500;
    color: var(--text-muted) !important;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-md);
}

.nav-link:hover, .nav-link.active {
    color: var(--theme-primary) !important;
    background-color: rgba(0, 193, 163, 0.05);
}

/* Search Box Floating */
.input-group-append .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    padding: 0.6rem 1.2rem;
    z-index: 5;
    background: transparent;
    color: var(--text-muted);
}
.input-group-append .btn:hover {
    color: var(--theme-primary);
}

/* ==================== 6. Special Pages ==================== */

/* Invite Code Box - Tech Style */
.invite-code-box {
    background: #F0FFF4;
    border: 1px dashed var(--theme-primary);
    color: var(--theme-primary);
    font-family: var(--font-mono);
    font-size: 1.75rem;
    letter-spacing: 0.2em;
    padding: 2rem;
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.invite-code-box::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 4px;
    background: repeating-linear-gradient(45deg, var(--theme-primary), var(--theme-primary) 10px, transparent 10px, transparent 20px);
    opacity: 0.2;
}

/* Breadcrumb */
.breadcrumb {
    background: transparent;
    padding: 0;
    font-size: 0.85rem;
}
.breadcrumb-item a {
    color: var(--text-muted);
}
.breadcrumb-item.active {
    color: var(--text-main);
    font-weight: 500;
}
.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--text-light);
}


/* ==================== 7. Animations ==================== */

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
    100% { transform: translateY(0px); }
}

.hero-img {
    animation: float 6s ease-in-out infinite;
}

/* ==================== 8. Pagination Styles ==================== */

.pagination {
    margin-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.per-page-selector select {
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.pagination-buttons {
    display: flex;
    gap: 5px;
}

.pagination-buttons .btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-buttons .btn.page-ellipsis {
    cursor: default;
}

.pagination-buttons .btn.active {
    cursor: default;
}

.pagination-info {
    color: #666;
}